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Archived This topic has been archived. Information and links in this thread may no longer be available or relevant. If you have a question create a new topic by clicking here and select the appropriate board.

‎01-08-2021 04:11 PM - edited ‎01-08-2021 04:27 PM

HP Recommended
Product: HP ProDesk 490
Operating System: Linux

Hello everyone,

I had an issue with updating the BIOS of my HP ProDesk 490. I downloaded the latest BIOS from the support site

https://support.hp.com/lv-en/drivers/selfservice/hp-prodesk-490-g2-microtower-pc/6893860

and I installed it via Windows 10. However, it messed up stuff (the OS would not start anymore, detected my 8GB RAM stick as 3GB Dual Channel RAM…). 

In order to go back to an older BIOS version, I wanted to use the BIOS flash ROM function, but I did not have another Windows machine at hand. So I tried to get a BIOS update stick using Linux/Ubuntu. However, all instructions I found in e.g. here

https://askubuntu.com/questions/539120/how-to-perform-a-hp-bios-upgrade-with-only-ubuntu

did not work for me. But I finally found out a way to get back to a working BIOS using the flash ROM function:

Use 7-zip to open the exe file of the BIOS downloaded from the HP website (yes it can be extracted). In the extracted files there is a script file Flash.bat. Open it with a text editor and look for a line like 

copy C:\SWSETUP\SP99290\LAN_0231.bin z:\efi\hp\bios\current

The latter is the target path for a USB stick (here \efi\hp\bios\current). Create this folder structure and copy the bin file(s) from the exe-archive into it, and now the BIOS flash ROM update function will find them (File > Flash System ROM > USB). Maybe this works for other HP models as well. Hope this helps!

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